class task
{
private:
    int _x;
    int _y;
    int _result;
    
public:
    task(){}
    task(int x,int y):_x(x),_y(y),_result(0)
    {}
    void excute()
    {
        _result=_x+_y;
    }
    int x()
    {
        return _x;
    }
    int y(){return _y;}
    int result()
    {
        return _result;
    }

};